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Finding the Fourth Proportional to 589.53, 813.93 and 403.35

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Solution

The fourth proportional to 589.53, 813.93 and 403.35 is: 556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.53 : 813.93 = 403.35 : x
  2. Step 2: Convert to fraction form
    589.53/813.93 = 403.35/x
  3. Step 3: Cross multiply
    589.53x = 813.93 × 403.35
  4. Step 4: Simplify right side
    589.53x = 328,298.67
  5. Step 5: Solve for x
    x = 328,298.67/589.53
  6. Step 6: Final answer
    x = 556.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.